CN212229619U - Capacitive touch membrane assembly and interactive display device - Google Patents
Capacitive touch membrane assembly and interactive display device Download PDFInfo
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- CN212229619U CN212229619U CN202020652310.2U CN202020652310U CN212229619U CN 212229619 U CN212229619 U CN 212229619U CN 202020652310 U CN202020652310 U CN 202020652310U CN 212229619 U CN212229619 U CN 212229619U
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- 239000012528 membrane Substances 0.000 title claims abstract description 22
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 20
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 10
- 238000013461 design Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000002042 Silver nanowire Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The utility model provides a capacitance touch membrane component and an interactive display panel, which comprises a touch membrane, a control board card, a unit board card, a control chip, a driving chip and a receiving chip, wherein the driving chip and the receiving chip are electrically connected with the control chip; the control board card is at least provided with a control chip, and each unit board card is provided with a driving chip or a receiving chip; a first lead unit and a second lead unit are arranged in a wiring area at the side edge of the touch control film; each first lead unit is correspondingly used for being connected with one driving chip, and each second lead unit is correspondingly used for being connected with one receiving chip; the unit board cards are arranged at least corresponding to two adjacent lead units in the circumferential direction around the touch control film, and control signal wires for connecting the two adjacent unit board cards are further arranged in a wiring area on the side edge of the touch control film. The utility model discloses reduced the interface quantity on the touch-control integrated circuit board and made the design of touch-control integrated circuit board more simplify, also easily assembly simultaneously.
Description
Technical Field
The utility model relates to a touch equipment technical field especially relates to an electric capacity touch-control membrane module and mutual display device.
Background
At present, the intelligent interactive display equipment in the market is more and more in variety, and along with the rapid development of a capacitance scheme, the interactive intelligent products of a capacitance touch technology are more and more. The large-size capacitive diaphragm is made of ITO (indium tin oxide), MM (metal mesh), SNW (silver nanowire), etc., the conventional large-size capacitive diaphragm routing mode is shown in fig. 1, all driving chips and receiving chips are arranged on a single touch board card, and the routing at the edge of the touch board is directly led out through an FPC to be connected with a socket on the touch board card. However, with the high requirements of people on touch performance and effect, the capacitance scheme grid is denser and denser, the number of channels required is more and more, and thus more interfaces are required for the touch board card, so that the touch board card is more complex, and the touch board card has larger physical size and lacks flexibility in installation.
SUMMERY OF THE UTILITY MODEL
Based on above-mentioned current situation, the utility model discloses a main aim at provides a touch-control integrated circuit board design is simplified and is made electric capacity touch-control membrane subassembly and mutual display device that the touch-control integrated circuit board easily installed.
In order to achieve the above object, the utility model adopts the following technical scheme:
a capacitive touch membrane assembly comprises a touch membrane, a control board card, a unit board card, a control chip, a driving chip and a receiving chip, wherein the driving chip and the receiving chip are electrically connected with the control chip; wherein,
the control board cards are at least provided with the control chips, and each unit board card is provided with a driving chip or a receiving chip;
a first lead unit correspondingly connected with the plurality of driving electrodes and a second lead unit correspondingly connected with the plurality of receiving electrodes are arranged in the wiring area at the side edge of the touch control film; each first lead unit pair is used for being connected with one driving chip, and each second lead unit pair is used for being connected with one receiving chip;
the unit board cards are arranged at least corresponding to two adjacent lead units in the circumferential direction around the touch control film, and control signal wires for connecting the two adjacent unit board cards are further arranged in a wiring area on the side edge of the touch control film.
Preferably, the wire outgoing end of the lead unit is provided with a wire connection portion for the control board card or the unit board card to connect, and two ends of the control signal wire share the wire connection portion with the wire outgoing end of the adjacent lead unit respectively.
Preferably, the lead unit correspondingly provided with the unit board card comprises at least two sub-lead groups; the wire outlet end of each sub-lead group is provided with a sub-wiring part;
the control signal line and the adjacent outlet end of the sub lead group share the sub wiring part; and/or the control signal line shares the wiring part with the wire outlet end of the lead unit which is adjacent and is not provided with the sub-lead group.
Preferably, the lead unit and the control signal line are disposed in the same layer.
Preferably, the lead units in the wiring area on at least one side of the touch film are respectively provided with the unit board card, each lead unit is provided with at least two sub-lead groups corresponding to each driving chip and/or receiving chip connected with the lead unit, and the wire outlet end of each sub-lead group is provided with a wiring part.
Preferably, in the circumferential direction around the touch film, the unit board cards far away from the control board card are connected in series with the adjacent unit board cards in pairs through the control signal lines to be electrically connected with the control board card, and the unit board cards adjacent to the control board card are directly connected with the control board card; the width of the wiring area of the sub lead wire group is Wi, the distance from the outer edge of the wiring area of the control signal wire to the inner edge of the wiring area of the adjacent sub lead wire group is Di, and Di <2 Wi.
Preferably, the sub lead group is disposed in a different layer from the control signal line.
Preferably, the touch film has two opposite short sides and two opposite long sides, the routing area includes a first routing area respectively disposed on the two short sides and a second routing area disposed on one of the long sides, the first routing area is provided with a first lead unit, and the second routing area is provided with a second lead unit.
Preferably, the touch film has two opposite short sides and two opposite long sides, the routing area includes a first routing area respectively disposed on one of the short sides and a second routing area disposed on one of the long sides, the first routing area is provided with a first lead unit, and the second routing area is provided with a second lead unit.
The utility model also provides an interactive display device, including the system mainboard and as above electric capacity touch-control membrane module, the system mainboard with control panel card communication connection.
The utility model discloses an electric capacity touch-control membrane subassembly is through at least with partial driver chip or receive chip independent the setting on the unit integrated circuit board from the touch-control integrated circuit board to the control signal line that utilizes to arrange on the touch-control membrane concatenates two adjacent unit integrated circuit boards, so, has reduced the interface quantity on the touch-control integrated circuit board and has made the design of touch-control integrated circuit board more simplify, also easily assembly simultaneously.
Other advantages of the present invention will be described in the detailed description, and those skilled in the art can understand the technical advantages brought by the technical features and technical solutions through the descriptions of the technical features and the technical solutions.
Drawings
Preferred embodiments of an interactive display device according to the present invention will be described below with reference to the accompanying drawings. In the figure:
FIG. 1 is a simplified schematic diagram of a prior art interactive display device;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a simplified structural diagram of an interactive display device according to the related application;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
fig. 5 is a simplified schematic structural diagram of a first implementation of the interactive display device of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is an enlarged view of a portion of FIG. 5 at D;
FIG. 8 is an enlarged view of a portion of FIG. 5 at E;
fig. 9 is a simplified schematic structure diagram of a third implementation of the interactive display device of the present invention;
fig. 10 is a simplified schematic diagram of a fourth implementation of the interactive display device of the present invention.
Reference numerals:
Detailed Description
The utility model provides a capacitance touch-control membrane component and an interactive display device which simplify the design of a touch-control board card and enable the touch-control board card to be easily installed, please refer to fig. 5, fig. 9 and fig. 10, the capacitance touch-control membrane component 100 comprises a touch-control membrane 1, a control board card 2, a unit board card 3, a control chip (not shown), and a driving chip 4 and a receiving chip 5 which are electrically connected with the control chip; wherein,
the control board card 2 is at least provided with a control chip, and each unit board card 3 is provided with a driving chip 4 or a receiving chip 5;
a first lead unit 12a correspondingly connected with the plurality of driving electrodes 16 and a second lead unit 12b correspondingly connected with the plurality of receiving electrodes 17 are arranged in a wiring area at the side edge of the touch control film 1; each first lead element 12a is correspondingly used for being connected with one driving chip 4, and each second lead element 12b is correspondingly used for being connected with one receiving chip 5;
the unit board cards 3 are arranged at least corresponding to two adjacent lead units in the circumferential direction around the touch film 1, and control signal lines 6 for connecting the two adjacent unit board cards 3 are further arranged in a wiring area on the side edge of the touch film 1.
In this embodiment, the touch film 1 is used to form a touch sensing area, and the touch film 1 may be planar in practical application, for example, an intelligent interactive flat plate; curved surfaces are also possible, for example curved screens. The touch film 1 is generally arranged in a rectangular shape, i.e., includes four side edges. The trace area is generally disposed at the periphery of the touch sensing area, and the number and position of the trace area are correspondingly different according to different electrode driving methods.
Besides the control chip, the control board card 2 may also be provided with a driving chip 4 or a receiving chip 5, and neither the driving chip 4 nor the receiving chip 5 is provided. During operation, a processor on the control board, for example, an MCU (micro control unit) issues an instruction to control the driving chip and the receiving chip, and after receiving feedback data from the receiving chip, the instruction is converted into touch coordinate information and reported to a system motherboard, for example, an android motherboard or a Windows system motherboard.
The number of the unit board cards 3 is determined according to the number of the driving chips 4 and the number of the receiving chips 5, some of the unit board cards 3 are used for setting the driving chips 4, and other unit board cards 3 are used for setting the receiving chips 5. Correspondingly, the expression "at least two adjacent lead elements" may include such cases: 1) two adjacent first lead elements 12 a; 2) two adjacent second lead elements 12 b; 3) adjacent first and second lead elements 12a and 12 b.
One end of the first lead unit 12a is used for connecting the driving chip 4, and the other end is used for connecting the driving electrode 16 of the touch film 1; one end of the second lead unit 12b is used for connecting the receiving chip 5, and the other end is used for connecting the receiving electrode 17 of the touch control film 1; each of the first lead unit 12a and the second lead unit 12b includes a plurality of leads, each lead represents an electrode channel, specifically, each lead of the first trace 12a is correspondingly connected to one driving electrode 16, and each lead of the second trace 12b is correspondingly connected to one receiving electrode 17; the first lead element 12a and the second lead element 12b can be arranged into multiple groups, and each group of the first lead element 12a or the second lead element 12b can be further provided with multiple sub-lead groups, for example, the first lead element 12a is provided with two sub-lead groups 121a and 122 a; the second lead unit 12b is also provided with two sub-lead groups 121b and 122b, the wire leading ends of the sub-lead groups 121a and 122a are respectively provided with a wire connecting portion 13a, and the wire leading ends of the sub-lead groups 121b and 122b are respectively provided with a wire connecting portion 13 b. Referring to fig. 5, two first lead units 12a are correspondingly disposed at the left and right sides of the touch film 1; 3 second lead units 12b are arranged at the lower side edge of the touch control film; referring to fig. 6, the first lead element 12a on the left side is configured to include two sub-lead groups (121a,122a), the first lead element 12a includes two sub-groups; each sub-group includes 6 lead lines, and each lead line is connected to one of the driving electrodes 16 extending in the left-right direction. Thus, the left driver chip 4 is connected with 12 driver electrodes 16 in total, and it can be understood that, since fig. 5 is a simplified schematic diagram, the number of driver electrodes 16 that can be connected to each driver chip 4 is actually greater than 12. Similarly, referring to fig. 7, the first second lead unit 12b from the left of the lower side of the touch film 1 also includes two sub-groups (121b, 122b), each sub-group includes 8 leads, and each lead is correspondingly connected to one receiving electrode 17 extending along the up-down direction. Thus, the receiving chip 5 on the left is connected with 16 receiving electrodes 17 in total.
The utility model discloses an electric capacity touch-control membrane subassembly is through at least with partial driver chip 4 or receiving chip 5 independent come out the setting on unit integrated circuit board 3 from control integrated circuit board 2 to utilize the control signal line 6 of arranging on touch-control membrane 1 to concatenate two adjacent unit integrated circuit boards 3, so, reduced interface quantity on the control integrated circuit board 2 and made control integrated circuit board 2's design more simplify, also easily assembly simultaneously.
Furthermore, the wire outlet end of the lead unit is provided with a wire connecting part for connecting the control board card 2 or the unit board card 3. In order to reduce the number of steps required for assembly and the assembly difficulty, the two ends of the control signal line 6 share wiring portions with the adjacent wire outlet ends of the lead units respectively. It can be understood that, in this embodiment, the common connection portion or the common sub-connection portion is a centralized connection manner, taking the plug terminal as an example, each lead of the lead unit is provided with one contact piece in the plug terminal, and if one lead unit has 12 leads, 12 contact pieces are provided in the plug terminal; if the control signal line 6 includes 4 wires, and if the jack terminal is separately provided, each wire is also provided with one contact piece correspondingly, when the control signal line 6 needs to share the jack terminal (wiring portion) of the lead unit with 12 contact pieces, a jack terminal with 18 contact pieces can be newly provided.
Furthermore, in the lead units correspondingly provided with the unit board cards 3, at least one lead unit comprises at least two sub-lead groups, and a sub-wiring part is arranged at the wire outlet end of each sub-lead group;
the control signal line 6 shares the sub-wiring portion with the sub-lead group adjacent thereto; and/or the control signal line 6 shares a wiring portion with the outlet end of the lead unit adjacent to and not provided with the sub-lead group.
In the present embodiment, a specific manner of controlling the signal lines 6 to share the sub-wiring portions or the wiring portions of the lead units where the sub-lead group is not provided may include:
1) both ends of the control signal wire 6 are connected with the sub lead group; taking fig. 5 to 8 as an example, each of the first lead units 12a is provided with a sub-lead group 121a and a sub-lead group 122a, respectively, and each of the second lead units 12b is provided with a sub-lead group 121b and a sub-lead group 122b, respectively; each control signal line 6 is shared with the sub-wiring portion 13a of the adjacent sub-lead group 121a, the sub-wiring portion 13a of the sub-lead group 122a, the sub-wiring portion 13b of the lead group 121b, and the sub-wiring portion 13b in the sub-lead group 122 b;
2) one end of the control signal wire 6 is connected with the sub wiring part of the sub lead group, and the other end is connected with the wiring part of the lead unit without the sub lead group;
3) both ends of the control signal wire 6 are connected with the wiring parts of the lead units which are not provided with the sub lead groups;
it can be understood that the control signal line 6 in this embodiment may share a wiring portion with a lead unit without a sub-lead group, or share a sub-wiring portion with a sub-lead group, and the process required for assembly is reduced by the shared wiring portion or the sub-wiring portion, thereby further reducing the assembly difficulty.
Furthermore, the sub-lead group and the control signal line 6 are disposed on the same layer, and both ends of the control signal line 6 share the wiring portion with the wire outlet ends of the adjacent sub-lead group or lead unit.
In this embodiment, the process difficulty can be reduced by arranging the same layer, and since the number of channels or wires for controlling the signal lines is generally less than 4, the same layer does not occupy too large width even if arranged on the same layer.
As shown in fig. 1 and fig. 2, the conventional interactive display device includes a capacitive touch device 100 'and a system motherboard 200', the capacitive touch device 100 'includes a touch film 1', a touch pad 2', a control chip (not shown), a driving chip TX (4'), and a receiving chip RX (5'), and the control chip, the driving chip TX (4'), and the receiving chip RX (5') are disposed on the touch pad 2'; each group of wires on the touch film 1' are connected with an FPC wire through a reserved connection terminal, the FPC wire is further connected with a corresponding driving chip TX (4') or receiving chip RX (5') on the touch board 2', and in order to avoid setting too many interfaces on the touch board 2', a single group of wires corresponds to one reserved connection terminal and one driving chip TX or receiving chip TX, so that the number of channels (wires) which need to be arranged in parallel in a wire routing area is large, and further, in order to ensure the reliability of electric signals, the finally required wire routing area is wide, for example, an 86-inch interactive display device, the wires on the driving side need a wire routing area which is 12mm wide (such as W1 in fig. 2), and the wires on the receiving side need a wire routing area which is more than 20 mm.
Further, the utility model discloses a reduce the width in the line region of walking of lead wire unit, the lead wire unit in the line region of walking of 1 at least one side department of touch-control membrane all corresponds and is provided with unit integrated circuit board 3, every the lead wire unit corresponds every and links to each other with this lead wire unit drive chip 4 and/or receive chip 5 set up two at least sub-lead group, every respectively the leading-out terminal of sub-lead group sets up wiring portion.
In this embodiment, the touch film 1 can realize the narrowing of the trace area at one or more sides, and specifically, corresponding to the trace area:
when only the first lead unit 12a is arranged in the wiring area, the first lead unit 12a is provided with at least two first wiring parts 13a corresponding to each of the driving chips 4 connected with the first lead unit 12a, and the driving chips 4 connected with the first lead unit 12a through the first wiring parts 13a are respectively arranged on the unit board cards 3;
when only the second lead unit 12b is arranged in the wiring area, the second lead unit 12b is provided with at least two second wiring parts 13b corresponding to each receiving chip 5 connected with the second lead unit 12b, and the receiving chips 5 connected with the second lead unit 12b through the second wiring parts 13b are respectively arranged on the unit board cards 3;
when both the first lead unit 12a and the second lead unit 12b are provided in the wiring region, the first lead unit 12a is provided with at least two first wiring portions 13a corresponding to each of the driver chips 4 connected to the first lead unit 12a, the second lead unit 12b is provided with at least two second wiring portions 13b corresponding to each of the receiver chips 5 connected to the second lead unit 12b, and the driver chip 4 connected to the first lead unit 12a through the first wiring portions 13a and the receiver chip 5 connected to the second lead unit 12b through the second wiring portions 13b are respectively provided on the unit board card 3.
In order to solve the problem of the wide wiring area required by the lead unit in the solutions of fig. 1 and fig. 2, please refer to fig. 3 and fig. 4, in the related application, an interactive display device is proposed, which includes a capacitive touch film assembly 100 and a system main board 200, in the capacitive touch membrane assembly, at least part of the driving chip 4 and the receiving chip 5 are arranged on the unit board 3 card outside the control board card 2, and the driving chip 4 and the receiving chip 5 which are arranged independently of the control board card 2 are respectively connected with the wires (12a,12b) in the wire areas (11a, 11b) at the corresponding side edges of the touch membrane and the receiving chip 5 through the two wire connection parts (13a,13b), the number of the wires or the number of the channels which need to be arranged in parallel along the direction vertical to the width direction of the wire areas in the wire areas (11a, 11b) is reduced, thereby realizing the narrowing of the wire areas. Referring to fig. 2 and 4, in the touch film with the same specification, W2 in fig. 4 is one half of W1 in fig. 2. However, in the solutions of fig. 3 and 4, the connection lines 6 of the adjacent unit cards 3 are disposed outside the touch film, which brings certain inconvenience to assembly.
Further, please refer to fig. 6 to 8 together, in order to realize the narrow-side wiring of the touch film 1 and reduce the difficulty of assembling the control signal line 6, in the circumferential direction around the touch film 1, the unit board 3 far away from the control board 2 is electrically connected with the control board 2 by connecting the control signal line 6 and the adjacent unit board 3 in series, and the unit board 3 adjacent to the control board 2 is directly connected with the control board 2; the width of the wiring area of the sub lead wire group is Wi, the distance from the outer edge of the wiring area of the control signal wire 6 to the inner edge of the wiring area of the adjacent sub lead wire group is Di, and Di <2 Wi.
In the present embodiment, as a specific example, D3<2 × W3 (i.e., twice W3) in fig. 6; d4<2W4 (i.e., twice W4) in fig. 7; in fig. 8D 5<2 × W5 (i.e. twice W5). In the capacitive touch film assembly 100 of the present embodiment, the control signal lines 6 connecting two adjacent unit boards 3 in series are also arranged on the touch film 1, so that the assembly difficulty is reduced. In addition, by controlling the outer edge of the wiring region of the control signal line 6, the distance from the outer edge of the wiring region of the control signal line 6 to the inner edge of the wiring region of the adjacent sub-lead group is less than twice the width of the wiring region of the sub-lead group, so that even if the control signal line 6 is arranged on the touch film 1, the effect of obtaining a certain degree of narrow-side lead unit can be ensured.
Further, the sub-lead group is arranged in a different layer from the control signal line 6. Therefore, the problem of interference with the sub-lead group does not need to be considered, the positions where the control signal line 6 can be arranged are more, and the occupation of the line width of the wiring area can be further reduced, for example, the outer edge of the wiring area of the control signal line 6 is positioned at the inner side of the outer edge of the wiring area of the corresponding sub-lead group.
Further, referring to fig. 5 to 9, the touch film 1 has two opposite short sides and two opposite long sides, the routing area includes a first routing area 11a respectively disposed on the two short sides and a second routing area 11b disposed on one of the long sides, the first routing area 11a is provided with a first lead unit 12a, and the second routing area 11b is provided with a second lead unit 12 b;
the second routing area 11b is provided with at least two second wiring portions corresponding to each receiving chip 5 connected to the second lead unit 12b in the second routing area 11b, and the receiving chips 5 connected to the second lead unit 12b in the second routing area 11b through the second lead unit 12b are respectively arranged on the unit board card 3.
In this embodiment, the touch film 1 is configured to include 4 side edges, which is beneficial to cutting and improving the area utilization rate, and the first lead unit 12a and the second lead unit 12b are configured in different regions, so that the wiring complexity can be reduced. The second lead element 12b connected to the receiving chip 5 is disposed in the second trace region 11b, so that the length of the corresponding receiving electrode 17 is beneficial to shorten the detection response time. Since the second lead element 12b in the second trace area 11b is divided into two or more second wire connecting portions 13b to be connected to each receiving chip 5, the number of parallel leads (channels) of the second lead element 12b in the direction perpendicular to the width direction of the second trace area 11b is reduced, thereby reducing the width of the second trace area 11 b.
Further, referring to fig. 9 again, the touch film 1 is provided with a first routing area 11a corresponding to two ends of each group of driving electrodes 16 in the touch sensing area, and two ends of each group of driving electrodes 16 are connected to the two driving chips 4 through first lead units 12a corresponding to the first routing area 11 a;
the first wiring area 11a is provided with at least two first wiring portions corresponding to each driving chip 4 connected with the first lead unit 12a in the first wiring area 11a, and the driving chips 4 connected with the first lead unit 12a in the first wiring area 11a through the first lead unit 12a portions are respectively arranged on the unit board card 3;
a part of the control signal line 6 at the corner is disposed in the first routing area 11a, and another part is disposed in the second routing area 11 b.
In this embodiment, the first lead units 12a and the corresponding driving chips 4 are respectively disposed at two ends of the driving electrode 16 to facilitate solving the problem of driving signal weakening caused by the oversize long side of the touch film 1. Similarly, the first lead element 12a in the first trace area 11a is connected to each of the driving chips 4 by dividing the first wire connecting portion 13a into two or more, so that the number of parallel leads (channels) of the first lead element 12a in the direction perpendicular to the width of the first trace area 11a is reduced, thereby reducing the width of the first trace area 11a, i.e., W3 in fig. 6 is reduced. The control signal line 6 is also arranged at the corner position of the touch film, so that the connection of the adjacent side unit board cards 3 can be further simplified.
Further, referring to fig. 10, the touch film 1 has two opposite short sides and two opposite long sides, the trace area includes a first trace area 11a disposed on one of the short sides and a second trace area 11b disposed on one of the long sides, the first trace area 11a is provided with a first lead unit 12a, and the second trace area 11b is provided with a second lead unit 12 b.
In this embodiment, the touch film 1 is configured to include 4 side edges, which is beneficial to cutting and improving the area utilization rate, and the first lead unit 12a and the second lead unit 12b are configured in different regions, so that the wiring complexity can be reduced. The second lead element 12b connected to the receiving chip 5 is disposed in the second trace region 11b, so that the length of the corresponding receiving electrode 17 is beneficial to shorten the detection response time. The first lead unit 12a connected to the driving chip 4 is disposed on a single side, and the size of the touch film 1 in the extending direction of the long side can be reduced compared to the case where the first lead unit is disposed on the opposite sides. By arranging the second lead unit 12b connected to the receiving chip 5 on a single side in the same manner, the size of the touch film 1 in the extending direction of the short side can be reduced compared to arranging the opposite sides.
Further, in order to reduce the width of the second wiring region 11b in the single-side single-drive touch film 1, at least two second wiring portions are disposed in the second wiring region 11b corresponding to each receiving chip 5 connected to the second lead unit 12b in the second wiring region 11b, and the receiving chips 5 connected to the second lead unit 12b in the second wiring region 11b through the second lead unit 12b are disposed on the unit board card 3, respectively.
In this embodiment, the second lead unit 12b in the second trace area 11b is divided into two or more second wire connecting portions 13b to be connected to each receiving chip 5, so that the number of parallel leads (channels) of the second lead unit 12b in the direction perpendicular to the width direction of the second trace area 11b is reduced, thereby reducing the width of the second trace area 11 b.
Further, the first routing area 11a is provided with at least two first wiring portions corresponding to each of the driving chips 4 connected to the first lead unit 12a in the first routing area 11a, and the driving chips 4 connected to the first lead unit 12a in the first routing area 11a through the first lead unit 12a portions are respectively provided on the unit board card 3;
a part of the control signal line 6 at the corner is disposed in the first routing area 11a, and another part is disposed in the second routing area 11 b.
In the present embodiment, similarly, the first lead element 12a in the first trace area 11a is connected to each driving chip 4 by dividing the first wire connecting portion 13a into two or more, so that the number of leads (channels) of the first lead element 12a in parallel in the direction perpendicular to the width direction of the first trace area 11a is reduced, and thus the width of the first trace area 11a is reduced, that is, W2 in fig. 6 is reduced, and in contrast, W2 in fig. 6 is one-half of W1 in fig. 2. The control signal line 6 is also arranged at the corner position of the touch film, so that the connection of the adjacent side unit board cards 3 can be further simplified.
Further, more than two receiving chips 5 connected with the second lead unit 12b in the second routing area 11b are provided, and the control board card 2 is respectively adjacent to and electrically connected with the unit board cards 3 of two receiving chips 5. Thus, the links of the unit board cards 3 connected in series are reduced, and wiring is further simplified.
The utility model also provides an interactive display device, including system motherboard 200 and as above electric capacity touch-control membrane module 100, system motherboard and 2 communication connection of control integrated circuit board. The specific structure of the capacitive touch film assembly 100 refers to the above embodiments, and since the interactive display device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
It will be understood that the above-described embodiments are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions may be made in the details described herein by those skilled in the art without departing from the basic principles of the invention.
Claims (10)
1. A capacitive touch membrane assembly is characterized by comprising a touch membrane, a control board card, a unit board card, a control chip, a driving chip and a receiving chip, wherein the driving chip and the receiving chip are electrically connected with the control chip; wherein,
the control board cards are at least provided with the control chips, and each unit board card is provided with a driving chip or a receiving chip;
a first lead unit correspondingly connected with the plurality of driving electrodes and a second lead unit correspondingly connected with the plurality of receiving electrodes are arranged in the wiring area at the side edge of the touch control film; each first lead unit pair is used for being connected with one driving chip, and each second lead unit pair is used for being connected with one receiving chip;
the unit board cards are arranged at least corresponding to two adjacent lead units in the circumferential direction around the touch control film, and control signal wires for connecting the two adjacent unit board cards are further arranged in a wiring area on the side edge of the touch control film.
2. The capacitive touch film assembly of claim 1, wherein the wire outlet end of the lead unit is provided with a wire connecting portion for connecting the control board card or the unit board card, and two ends of the control signal line share the wire connecting portion with the wire outlet end of the adjacent lead unit respectively.
3. The capacitive touch film assembly of claim 2,
at least one lead unit comprises at least two sub-lead groups in the lead units correspondingly provided with the unit board cards, and a sub-wiring part is arranged at the wire outlet end of each sub-lead group;
the control signal line and the adjacent outlet end of the sub lead group share the sub wiring part; and/or the control signal line shares the wiring part with the wire outlet end of the lead unit which is adjacent and is not provided with the sub-lead group.
4. The capacitive touch film assembly of claim 2 or 3, wherein the lead unit and the control signal line are disposed on the same layer.
5. The capacitive touch film assembly of claim 1, wherein the unit board cards are disposed in correspondence with lead units in the routing area on at least one side of the touch film, each lead unit is provided with at least two sub-lead groups corresponding to each of the driver chip and/or the receiver chip connected to the lead unit, and a wiring portion is disposed at an outlet end of each sub-lead group.
6. The capacitive touch film assembly of claim 5, wherein the unit card remote from the control board is electrically connected to the control board by connecting the control signal line two by two with the adjacent unit card in a circumferential direction around the touch film, the unit card adjacent to the control board being directly connected to the control board; the width of the wiring area of the sub lead wire group is Wi, the distance from the outer edge of the wiring area of the control signal wire to the inner edge of the wiring area of the adjacent sub lead wire group is Di, and Di <2 Wi.
7. The capacitive touch film assembly of claim 5 or 6, wherein the sub-lead groups are disposed in different layers from the control signal lines.
8. The capacitive touch film assembly of claim 5 or 6,
the touch control film is provided with two opposite short side edges and two opposite long side edges, the wiring area comprises a first wiring area and a second wiring area, the first wiring area is arranged on the two short side edges, the second wiring area is arranged on one long side edge, the first wiring area is provided with a first lead unit, and the second wiring area is provided with a second lead unit.
9. The capacitive touch film assembly of claim 5 or 6,
the touch control film is provided with two opposite short sides and two opposite long sides, the wiring area comprises a first wiring area and a second wiring area, the first wiring area is arranged on one of the short sides, the second wiring area is arranged on one of the long sides, the first wiring area is provided with first wirings, and the second wiring area is provided with second wirings.
10. An interactive display device, comprising a system motherboard and the capacitive touch film assembly according to any one of claims 1 to 9, wherein the system motherboard is communicatively connected to the control board card.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020652310.2U CN212229619U (en) | 2020-04-26 | 2020-04-26 | Capacitive touch membrane assembly and interactive display device |
| PCT/CN2020/109609 WO2021217958A1 (en) | 2020-04-26 | 2020-08-17 | Capacitive touch film assembly and interactive display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020652310.2U CN212229619U (en) | 2020-04-26 | 2020-04-26 | Capacitive touch membrane assembly and interactive display device |
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| Publication Number | Publication Date |
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| CN212229619U true CN212229619U (en) | 2020-12-25 |
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| CN202020652310.2U Active CN212229619U (en) | 2020-04-26 | 2020-04-26 | Capacitive touch membrane assembly and interactive display device |
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| Country | Link |
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| WO (1) | WO2021217958A1 (en) |
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| CN115171554A (en) * | 2022-09-07 | 2022-10-11 | 长春希达电子技术有限公司 | Display unit based on glass substrate, preparation method and splicing display module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101878183B1 (en) * | 2011-12-29 | 2018-07-16 | 엘지디스플레이 주식회사 | Touch display device |
| TWI549025B (en) * | 2013-05-08 | 2016-09-11 | 廣達電腦股份有限公司 | Touch panel |
| TW201525791A (en) * | 2013-12-17 | 2015-07-01 | Chunghwa Picture Tubes Ltd | Touch display apparatus |
| CN103699282B (en) * | 2013-12-24 | 2016-12-07 | 华映视讯（吴江）有限公司 | Touch control display apparatus |
| CN105224135B (en) * | 2015-10-12 | 2018-05-18 | 京东方科技集团股份有限公司 | A kind of touch control display apparatus |
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2020
- 2020-04-26 CN CN202020652310.2U patent/CN212229619U/en active Active
- 2020-08-17 WO PCT/CN2020/109609 patent/WO2021217958A1/en active Application Filing
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| WO2021217958A1 (en) | 2021-11-04 |
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